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mlib_imageblend_fp(3mlib) [sunos man page]

mlib_ImageBlend_Fp(3MLIB)				    mediaLib Library Functions					 mlib_ImageBlend_Fp(3MLIB)

NAME
mlib_ImageBlend_Fp - blend with an alpha image SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ] #include <mlib.h> mlib_status mlib_ImageBlend_Fp(mlib_image *dst, const mlib_image *src1, const mlib_image *src2, const mlib_image *alpha); DESCRIPTION
The mlib_ImageBlend_Fp() function blends two images together on a pixel-by-pixel basis using an alpha image, when alpha is also on a pixel basis. The alpha image can be a single-channel image or have the same number of channels as the source and destination images. It uses the following equation when the alpha image is a single-channel image: dst[x][y][i] = alpha[x][y][0]*src1[x][y][i] + (1 - alpha[x][y][0])*src2[x][y][i] It uses the following equation when the alpha image has the same number of channels as the source and destination images: dst[x][y][i] = alpha[x][y][i]*src1[x][y][i] + (1 - alpha[x][y][i])*src2[x][y][i] PARAMETERS
The function takes the following arguments: dst Pointer to destination image. src1 Pointer to first source image. src2 Pointer to second source image. alpha Alpha image used to control blending. The pixels in this image should have values in the range of [0.0, 1.0]. RETURN VALUES
The function returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
mlib_ImageBlend(3MLIB), mlib_ImageBlend1_Fp_Inp(3MLIB), mlib_ImageBlend1_Inp(3MLIB), mlib_ImageBlend2_Fp_Inp(3MLIB), mlib_Image- Blend2_Inp(3MLIB), attributes(5) SunOS 5.10 10 Nov 2004 mlib_ImageBlend_Fp(3MLIB)

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mlib_ImageBlend(3MLIB)					    mediaLib Library Functions					    mlib_ImageBlend(3MLIB)

NAME
mlib_ImageBlend - blend with an alpha image SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ] #include <mlib.h> mlib_status mlib_ImageBlend(mlib_image *dst, const mlib_image *src1, const mlib_image *src2, const mlib_image *alpha); DESCRIPTION
The mlib_ImageBlend() function blends two images together on a pixel-by-pixel basis using an alpha image, when alpha is also on a pixel basis. The alpha image can be a single-channel image or have the same number of channels as the source and destination images. It uses the following equation when the alpha image is a single-channel image: dst[x][y][i] = a[x][y][0]*src1[x][y][i] + (1 - a[x][y][0])*src2[x][y][i] It uses the following equation when the alpha image has the same number of channels as the source and destination images: dst[x][y][i] = a[x][y][i]*src1[x][y][i] + (1 - a[x][y][i])*src2[x][y][i] PARAMETERS
The function takes the following arguments: dst Pointer to destination image. src1 Pointer to first source image. src2 Pointer to second source image. alpha Alpha image used to control blending. The a value equals (alpha * 2**(-8)) for MLIB_BYTE image, (alpha * 2**(-15)) for MLIB_SHORT image, (alpha * 2**(-16)) for MLIB_USHORT image, and (alpha * 2**(-31)) for MLIB_INT image. RETURN VALUES
The function returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
mlib_ImageBlend_Fp(3MLIB), mlib_ImageBlend1_Fp_Inp(3MLIB), mlib_ImageBlend1_Inp(3MLIB), mlib_ImageBlend2_Fp_Inp(3MLIB), mlib_Image- Blend2_Inp(3MLIB), attributes(5) SunOS 5.10 10 Nov 2004 mlib_ImageBlend(3MLIB)

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